Earth

[gosple2]

Keep the Earth clean. Besides, it's not Uranus.

[sidewaysfcs0718]

i saw on discovery that one of jupiters moons has alot of liquid water under its surface ..more than all of earths oceans in fact

and im pretty sure they found liquid water on mars

btw who says life needs water anyway ...if we imagine a planet with a complex atmosphere that has life ..maybe life theres is radically different ..maybe it wouldnt even need water .. complex molecules could form from other stuff ...

[mabyjr]

@sidewaysfcs0718 But Jupiter's moon isn't a planet, now is it?

And scientists say that Mars used to have liquid water, but not any more.

[puncheex]

@sidewaysfcs0718: You're right; they believe that Jupiter's moon Europa has a 60 mile deep shell of water upon its surface. The energy imparted by Jupiter's gravity should have melted the inner part of that water, making for a ocean of liquid water underneath a shell of ice. And there is definitely water ice on Mars; it acts like CO2 does here, never being able o show a liquid presence for lack of atmospheric pressure, but the carved canons and features say it hasn't always been that way.